Opie Outfitter

Adds a ring to OPie for Outfitter outfits. By default only the outfits
which are allowed to be shown in the Outfitter bar will be in the ring,
making it possible to control the contents of the ring from the outfitter
settings. If you want the ring to hold all your outfits regardless of
Outfitter bar settings, change the first line of the OPie_Outfitter.lua to be

local showAll = true

Code is heavily based on Opie Equipment Manager by Timewasted, as I deemed
it unnecessary to invent the wheel again.

Every time I change an item in an outfit, OPie Outfitter thinks it is a new outfit and adds it to the ring rather than updating the old one. If I make three changes to, say, my 'Normal' outfit, when I open up OPie Outfitter I will have four 'Normal' icons, one for the original, plus one for each change.